Pin-joint.



No. 674,023. Patented May I4, l90l. J. M. SEMPLE.

PIN JOINT.

(Application filed Dec. 13, 1900.) (No Model.)

T MESEEE- ut oams vzrzn s m. wovouma. wumua UNTTEE STATES PATENT OEEICE.

JOHN M. SEMPLE, OF ATTLEBORO, MASSACHUSETTS, ASSIGNOR TO THE B. K.MANUFACTURING COMPANY, OF RHODE ISLAND.

PIN JOINT.

SPECIFICATION forming part of Letters Patent N 0. 674,023, dated May 14,1901.

Application filed December 13, 1900- Serial No. 39,689. (No model.)

To ctZZ whom it may concern.-

Be it known that I, JOHN M. SEMPLE, a citizen of the United States,residing at Attleboro, in the county of Bristol and State ofMassachusetts, have invented a certain new and useful Improvement inPin-Joints, of which the following is a specification, reference beinghad therein to the accompanying drawings.

My invention relates to the pin tongue, joint, and post of ornamentalpins or brooches, and has for its objects the improved appearance of thefinished joint, a stable construction of the parts, an improved tensionfor the pin-tongue, and a minimum number of parts, with a resultingdecrease of expense and labor.

Heretofore in applying pin-tongues to pins or brooches of irregular bodyformations it has been necessary to solder the common forms ofpin-sockets to the top of a block and next solder the latter to the bodyto bring the pin-joint into a position parallel to the plane of the rearsurface of the body. Sometimes the block is used even on bodies having asmooth rear contour in an attempt to thereby create a tension upon thepin-tongue. Such constructions are obviously weak, laborious, andexpensive.

To the ends first above enumerated myinvention consists inthe'novel'construction and arrangement of parts hereinafter described,and illustrated in the accompanying drawings, wherein- Figure 1 is aside elevation of my improved pin-joint applied to a crescent or knotpin. Fig. 2 is a plan view of the pin-tongue blank; Fig. 3, a side viewof the same with completed base; Fig. &, a side elevation of the postand pin; and Fig. 5 is a transverse vertical section of the engagedtongue and post on line .56 00 of Fig. 1.

Like letters refer to like parts throughout the several views.

The construction and assemblage of parts are as follows: A pin-tongueblank A is constructed with lateral lugs or ears I) h projecting fromits end at right angles to the pinpoint a. The ears I) b are folded withtheir extremities approaching each other to form an arched or cup-shapedbase, as shown in nounced spring or tension for the pin-tongue A, Iprefer to make the upper post-surface e slightly inclined and continuethe same to form a fulcrum projection or toe i to meet the downwardpressure of the pin-tongue when the latter is forced into its catch m,Fig. l.

The post 0 may be struck up in quantities and of any convenient length.The lower ends thereof are then cut off at whatever length is mostconvenient to meet the irregularities of the bodies to which they arerespectively intended to be applied. The post 0 is soldered to thepin-body B, as shown in Fig. 1, and the catch an affixed in the usualmanner.

Having thus described my improved joint, what I claim as new, and desireto secure by Letters Patent, is

In-a pin-joint of the class described, the combination with the ornamentor equivalent body, of a post rigid at one end with said body andprovided at its other end with an inclined bearing-surface formed with afulcrum projection, the pin-tongue consisting of a single blank providedat one end with an integral laterally-expanded flattened portion bent toproduce offset ears constituting an arched base straddling the post, andcooperating with said inclined bearing-surface and the fulcrumprojection thereof, said inclined bearing-surface lying within thelongitudinal plane of the pin when fastened and disposed outwardly fromthe ornament or equivalent body, and a pivotal connection between saidears and the post.

In testimony whereof I have affixed my signature in presence of twowitnesses.

JOHN M. SEMPLE.

Witnesses:

S. O. BIGNEY, O. L. BARROWS.

